79872280

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3923}}^1$

素因数の和:4443

約数の個数: 32

約数和(自身を含む): 180111600

約数和(自身を除く): 100239320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 3923, 4072, 5090, 7846, 10180, 15692, 19615, 20360, 31384, 39230, 78460, 156920, 1996807, 3993614, 7987228, 9984035, 15974456, 19968070, 39936140, 79872280]

約数ペア:

[(1, 79872280), (2, 39936140), (4, 19968070), (5, 15974456), (8, 9984035), (10, 7987228), (20, 3993614), (40, 1996807), (509, 156920), (1018, 78460), (2036, 39230), (2545, 31384), (3923, 20360), (4072, 19615), (5090, 15692), (7846, 10180)]